title: Metanephric adenoma: a rare differential diagnosis of renal tumor in children.
abstract: Metanephric adenoma is an extremely rare tumor of the kidney. The clinical and anatomic characteristics are not yet well defined, but it is currently considered to be a benign tumor with a good prognosis, although recently two metastatic cases have been reported. Around 50% of cases are incidental findings, and symptoms include polycythemia, abdominal pain, hematuria and palpable mass. The morphological characteristics are similar to those of Wilms' tumor, suggesting a common embryological precursor. We present here the youngest girl yet to be reported with a diagnosis of metanephric adenoma.
authors.affiliation: Department of Morphology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil. jmbnetto@uropedjf.com.br
authors.forename: José Murillo
authors.initials: JM
authors.lastname: Bastos Netto
authors.forename: Tereza Cristina
authors.initials: TC
authors.lastname: Esteves
authors.forename: Rita de Cássia Monteiro Seabra
authors.initials: Rde C
authors.lastname: Mattos
authors.forename: Sandra Helena Cerrato
authors.initials: SH
authors.lastname: Tibiriçá
authors.forename: Sandra Márcia Carvalho Ribeiro
authors.initials: SM
authors.lastname: Costa
authors.forename: Leonardo José
authors.initials: LJ
authors.lastname: Vieira